thomst writes: Cnet's Stephen Shankland breaks the news that Sony will replace the lamentable Howard Stringer with Kazuo Hirai, the (now former) head of its electronics division. Better yet, the changeover will take place on April Fool's Day.Stringer, who was appointed CEO of Sony in 2005 will become Chairman of its board, and Hirai will become a board member.Hirai has been the leader of Sony's consolidated electronics group only since last year. He was in charge of all Sony electronics products, including the Playstation Network, which famously suffered a massive security breach that compromised its unencrypted user data on his watch.